@SpiderHunter I'm sorry for the sad difficulties you went through. i hope you have been able to come to terms and found peace. 
I'm really interested in the processes relating to "egg sharing" arrangements (where fertility clinics offer a big discount for women who donate their excess eggs) and am naturally very sceptical about the whole issue of "choice" when clinics are exploiting desperation.
I have been doing a bit of lurking on the fertility board on Mumsnet to try to update my knowledge. I have got the impression that these days hormone doses are more carefully titrated for each individual woman, and that there is no longer a policy of "get as many eggs as possible" but rather an understanding that only a few eggs are needed, or as one woman said, quoting her Dr "you only need one good egg". My understanding is lower doses of hormones means less eggs (but you really don't need lots) and reduces the risk of complications such as ovarian hyper-stimulation syndrome.
As it happens, although the area of the nhs I work in has nothing to do with gynaecology I had dealings with two young women who had ovarian hyper-stimulation syndrome in recent months. One of them ended up in ICU and nearly died. (Both were having egg retrieval for their own purposes and one told me the clinic kept doses to the minimum but she still developed complications). The risks associated with egg retrieval should not be understated.
So I have been wondering if women who agree to egg sharing are dosed up to produce lots more eggs, contrary to current best practice, and putting themselves at risk along the way?
I also see women on the fertility board discussing the quality of their eggs. Can IVF clinics be trusted to use the best quality eggs for the patient and the lesser eggs for donation purposes?
Then there is the heartbreaking dilemma women will face should their own attempts of IVF fail leaving them wondering if another woman got lucky and has had a baby which is their own genetic child.
https://podcasts.apple.com/gb/podcast/venus-rising/id1481872967?i=1000458521512
I posted the link to that podcast upthread but posting it again as it is relevant here.
They discuss the process of egg collection, where 40 or more eggs are "harvested" pointing out that for each egg another transvaginal needle stab is needed. 40+ needle stabs! They also mention a woman who "donated" (egg donors in the USA tend to be young women, typically college students, who have been targeted and bribed by the promised fee of $10k +) eggs when she was young. Later on she had fertility problems of her own (possibly related) and required IVF. She noted a significant difference in the way she was treated as a paying patient as oppose to her earlier experience as a battery hen with eggs to be harvested.